Upsilon production and polarization in p(p)over-bar collisions at root s=1.8 TeV

Acosta D., Affolder T., Akimoto H., Albrow M., Amaral P., Ambrose D., ...More

PHYSICAL REVIEW LETTERS, vol.88, no.16, 2002 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 88 Issue: 16
  • Publication Date: 2002
  • Doi Number: 10.1103/physrevlett.88.161802
  • Journal Indexes: Science Citation Index Expanded, Scopus


We report on measurements of the Y(1S), Y(2S), and Y(3S) differential cross sections (d(2)sigma/dp(T)dy)(\y\<0.4) , as well as on the &UUpsilon;(1S) polarization in p<(p)over bar> collisions at roots = 1.8 TeV using a sample of 77+/-3 pb(-1) collected by the collider detector at Fermilab. The three resonances were reconstructed through the decay Y-->mu(+)mu(-) . The measured angular distribution of the muons in the Y(1S) rest frame is consistent with unpolarized meson production.